Grinding machine



May 3, 1932- G. ENOCHSON 1,357,047

GRINDING MACHINE Filed Sept. 50, 1929 2 Sheets-Sheet l Eilll IN VEN TOR.

G E 71 B u no son y 19320 G. ENOCHSON 1,857,047

GRINDING MACHINE Filed Sept. 30, 1929 2 Sheets-Sheet 2 INVENTOR.

' ATTORNEY.

Cir

Patented May 3, 1932 UNITED STATES PTENT OFFICE GUY ENOCI-ISON, 0FAUSTIN, MINNESOTA GRINDING- MACHINE This invention relates to a grindingmachine designed primarily for grinding the walls of cylinders ofinternal combustion engines, but it is to be understood that a ma- 1chine, in accordance with this invention may be employed for grindingvalve seats or for any other purposes for which it is found applicable,and the invention has for its object to provide, in a manner ashereinafter set forth, a machine of the class referred to includingmeans for anchoring it to an engine block and further including meansfor adjustably positioning the abrading or grinding element thereof foraction upon the wall of any one of the cylinders of the block witl outdisconnecting the machine from the latter.

A further object of the invention is to provide, in a manner ashereinafter referred to, a machine of the class referred to including asupporting frame and means to enable the vertical and angular adjustmentof the frame when occasion requires to position the driving spindlethereof at the desired point with respect to the object which is to beground.

A further object of the invention is to provide, in a manner ashereinafter set forth, a machine of the class referred to includingmeans for anchoring it to an engine block and further including means topermit of the abra'ding or grinding element of the machine acting uponall of the cylinder walls of the block without disconnecting the machinefrom the latter.

A further object of the invention is to provide, in a manner ashereinafter set forth, a machine of the class referred to including averticaly adjustable, spring controlled driving spindle for the abradingor grinding element of the machine whereby the lowering of the latter ishad against the action of the controlling spring for the spindle and further whereby the abrading element can be quickly removed when not activewith respect to the cylinder wall.

Further objects of the invent-ion are to provide, in a manner ashereinafter set forth, a grinding machine for the purpose referred towhich is simple in its construction, strong, durable, portable,thoroughly eflicient in its use, conveniently adjusted, quickly anchoredin stationary position when desired to be used, readily assembled, andcomparatively inexpensive to set up and designed to be used for drivingany type of cylinder hone for grinding purposes.

l Vith the foregoing and other objects in view the invention consists ofthe novel construction, combination and arrangement of parts ashereinafter more specifically described, and illustrated in theaccompanying drawings, wherein is shown an embodiment of the invention,but it is to be understood that changes, variations and modificationscanbe resorted to which fall within the scope of the claims hereuntoappended.

In the drawings wherein like reference characters denote correspondingparts throughout the several views Figure 1 is a side elevation of agrinding machine in accordance with this invention.

Figure 2 is a top plan view thereof.

Figure 8 is a top plan view of the machine anchored to an engine block.

Figure 4 is a sectional plan of the machine anchored to an engine block,the latter being shown fragmentary in plan.

The machine includes a foot piece referred to generally at 1 and whichis adapted to be adjustably connected to the engine block 2. The footpiece 1 includes T-shaped body formed of a longitudinally extendingslotted part 3 and a horizontally disposed slotted part a which isintegral with the inner side of the part 3 centrally thereof. The slotin the part 3 is indicated at 5 and that in the part a at 6. The slots5, 6 do not communicate with each other. The foot piece 1 is adapted tobe positioned upon the top of the engine block 2 and is adj ustablysecured therewith by holdfast devices 7, 8, the former extending throughthe slot- 5 and the latter through the slot 6. The holdfast devicesengage in a pair of sockets provided in the engine block for thereception of holdfast devices, not shown, for fixedly securing theengine head, not shown in position. The sockets or openings whichreceive the holdfast devices for securing the engine head to the block 2are indicated at 9. As shown in Figure 4 the foot piece 1 is detachablyand V adjustably secured to the engine block 2 by the engagement of theholdfast devices 7, 8 in a pairof aligning sockets or, openings 9. Theholdfast devices 7, 8 may be of any suitable form but preferably consistof bolts carrying nuts on their. upper ends, the boltsbeing 1 of thethreaded, non-head type.

The foot piece 1 further includes an outwardly directed offset part 10which is intogral with the outer side of part3 centrally thereof, andintegral with the partlO is a vertically disposed post 11 having areduced upper portion 12, which provides a shoulder, 13 s The machinefurther includes'a supporting frame consistingof a vertically disposedplate 14 provided centrally of its bottom with an outwardly directed,right angularly disposed adjustable arm 15, a bracket member extendingat right angles to the plate 14, disposed centrally respect thereto andconsisting of a vertical arm 17 which mergesinto top and bottom arms 18,19 respectively. I H

"The plate14 and arm provides a motor carrier I r The top arm 18. at itsends is formed with concaved parts 20, 21 which are oppositely disposed.The part 20 is formed with oppo-' sitely extending flanges 221 The part21 is provided withoppositely extending flanges 23. The lower arm19' hasits ends formed of concaved parts24 25 which are oppositely,

disposed. Projecting from the part 24 are oppositely extending flanges26, and proj ecting from the P2111125 are oppositely extending flanges27. The outer portion of thearm 19, a

acts with the part 20 to receive a vertically disposed post 33. Y

. Positioned against the part 24 is a semicircularbearing cap 34,laterally flanged as at 35.. The flanges oppose the flanges 26.Projecting from the flanges 35 are tubular extensions 36 which abutagainst the inner face of the plate 14 near the bottom of the latter.Extending through plate 14, extensions 36 and flanges 35 and 26 areholdfast devices 37. The cap 34 coact-s with the part 24-for the passageof the post 33 and the latter is tightly clamped to the top and bottombars 18, 19 respectively of the bracket member. .Holdfast devices 31secure-flanges- 7 22, 28-together, aswellas the bracket meme driventhereby. r y V I The drivingpulley 55 is arranged over the her to plate14. The holdfast devices 31, 37

act to clamp the bracket member to the post 33. The post 33 isvertically adjustableto position the supporting frame of t hemachine atthe desired height with respect to the work to be operated upon.

the postll'by an arm 39 provided at one end with a split collar 40formed with a pair of flanges 41 and at its other end with a splitcollar '42 provided with a pair of flanges 43. Extending through theflanges 41 is'a holdfast device 44 and extending through the flanges 43is a holdfast device 45." The collar '40 is mounted on the Thepost 33isadjustably supported fromreduced zpor'tion 120i the post llandseatsupon the shoulder 13.v The collar ,42 embraces the lower portion of thepost The holdfast device 44 in connectionlwith the i flanges41 tightlyclamps the collar 40"to the;

reduced portion 12 of ost 11'. Th hole:

fast devices'45 inconnection .Withthe flanges i 43 tightly clamp thecollar 42 to thelower;

por ion of the post-33.; r 1 g Carried by the post33 is anadjusta'blestop "ac collar 46 which seatsupon thetopof collar .42. Theadjustment ofcollar flfl 'rel ative to post provides for thepositioningof the supporting frame ofthewmachine ,atethe de} siredpoint. 7 Furtherjwhen the V collar; 40" is releasedv frombindingengagement; with the reduced portion12 of the post 11 theme 39can be swung at any desirable inclination" l with respect to post 11 toposition thesup porting frame at an angle with respect to the latter.

p V Positioned against the part. 21 is a'sfemicircular-bearing cap 47provided with lflanges 4Srwhichabut flanges 23. The flanges .48

are secured to the flanges '23 by the'hold-t] 7 fast devices '49. Thecap .47 in connection with the part 21provides an upper bearing foradrivingspindle 50. Positioned: against-- the part 25 is a semi-circularbearing cap 51 provided with flanges 52 which abut flanges i 27 andare-fixedly secured therewith by the holdfast devices 53. The'cap51inpconnecp I s;

a lower heap tlQIl' with the part 25 provides ing for thedriving spindle50.

The upper portionof thehspindler is formed witha lengthwiseextendinggroove 54 for, the reception of a key carried by a drivingpulley 55 for p e-'50s Theglower V i 7 end of the spindle 50. is formedwith a-f socket member-56 to receive the shank 57lof-ani abrading orgrinding element or tool 58. The

shank 57 is detachably. connected to the men} ber 56 and by thisarrangement provision is had wherebytools of different diameters can bedetachably secured to the spindle50 to be top bar18 of the bracketmember and the hub ofthe pulley is indicated at'59. carried by L: '1 Ithe-top bar 18 of the bracket membe'r' and engaging in the hub 59 is aholder device 60 to prevent the pulley 55 moving upwardly with respectto the spindle 50. The hub 53 of the pulley 55 is peripherally groovedto receive the holder member 60.

Opposing the plate 14, is a motor 61 preferably of the electric type,and which has its housing formed with oppositely extending, laterallydisposed webs 62 or which may be a plate and said webs 62 are fixedlysecured to the plate 1% by the holdfast devices 63. The shaft of themotor is indicated at 64 and has its lower end extend to the outer endof the arm 15. The shaft 6 has its upper end provided with a pulley 65and leading therefrom is a driving belt 67 for the purpose of operatingthe pulley 65.

Secured to the top bar 18 of the bracket member is an upstanding movablesupport 68 which inclines in a direction away from the spindle 50.Carried by the support 68 in proximity to its upper end is a pivot 69upon which is pivotally mounted the arms 70 of the yoke-shaped portion71 of an operating handle 72. The upper end of the driving spindle 50 isprovided with a head piece 73 formed with a pair of oppositely entendirulugs 7% which provide pivots for the arms r0 of the yoke-shaped portion71 of the operating handle 72.

The upper end of the support 68 carries a pin or stud 75 to which isconnected the upper end of a controlling spring 76 for the operatinghandle 72. The lower end of the spring 7 6 is fixedly secured to a shortrod 77 carried by the arm 70 of the yoke-shape portion 71.

It is thought the many advantages or" a grinding machine, in accordancewith tiis invention can be readily understood, and although thepreferred embodiment of the in vention is as illustrated and described,yet it is to be understood that changes in the details of constructioncan be had which fall within the scope of the invention as claimed.

What I claim is 1. A grinding machine comprising a vertically adjustableelement, a bracket provided at its outer end with superposed bearings, amotor carrier, means for clamping the carrier and the inner end of thebracket to the upper portion of said element, a foot piece, an angularlyadjustable arm connected to said foot piece and supporting said element,a rotatable and vertically ad ustable spindle, spindle driving meansmounted on the upper of said bearings, said spindle extend through saiddriving means and beain f said spindle and driving means having coactingmeans for rotatably and slidably connecting the spindle to said drivingmeans, a support carried by the bracket, and spring controlled meansconnected with said support and with the spindle for verticallyadjusting the latter.

2. A grinding machine comprising a bracket having superposed bearings atits anda spring controlled means pivotally connected with said bracketand with said spindle for vertically adjusting the latter.

3. in a grinding machine, a vertically adjustable post provided on itslower portion with a vertically adjustable collar, a horizontallydisposed angularly adjustable arm having means at its outer end forsecuring the lower end of said post therein, said collar abutting thetop of the outer end of said arm, supporting means for said arm, saidarm having means at its inner end for clamping it to said supportingmeans, a supporting structure clamped intermediate its ends to the upperportion of said post, and a spindle and spindle driving mechanismcarried by said supporting structure.

st. in a grinding machine, avertically adjustable post provided on itslower portion with a vertically adjustable collar, a horizontallydisposed angularly adjustable arm having means at its outer endforsecuring the lower end of said post therein, said collar abutting thetop of the outer end of said arm, supporting'means for said arm, saidarm hav ing means at its inner end for clamping it to said supportingmeans, a supporting structure clamped intermediate its ends to the upperportion of said post, and a spindle and spindle driving mechanismcarried by said supporting structure, said supporting structureincluding superposed bearings for the spindle and a motor carrier.

5. In a grinding machine, a vertically adjustable post provided on itslower portion with a vertically adjustable collar, a horizontallydisposed angularly adjustable arm having means at its outer end forsecuring the lower end of said post therein, said collar abutting thetop of the outer end of said arm, supporting means for said arm, saidarm having means at its inner end for clamping it to said supportingmeans, a supporting structure clamped intermediate its ends at the upperportion of said post, a spindle and spindle driving mechanism carried bysaid supporting structure, said spindle being vertically adjustable, anda spring controlled means pivotally connected with said supportingstructure and with said spindle for vertically adjusting the latter.

- 6. In a grinding machine,"a verticallyad justable post provided on itslower portion with a vertically adjustable collar, a horizontallydisposed angularly adjustable arm 5 having meansat its outer end forsecuring the lower end'of said post therein, said collar abutting thetop of the outer end of said arm, supporting means for said arm, saidarm having means at its inner end for clamplo ing it to said supportingmeans, a supporting structure clamped intermediate its ends to the upperportion of said post, a spindle and spindle driving-mechanism carried bysaid supportingstructure, said supporting structure including superposedbearings for the spindle anda motor carrier, said spindle beingvertically adjustable, and-springcontrolled "means pivotally connectedwith said supporting structure and with said-spindle for verticallyadjusting the latter.

In aigrinding machine, a'verti'cally adjustable post provided on itslower portion with'avertically adjustable collar, ahorizontally-disposed angularly adjustable arm having means at its outerend for clamping the lower end of said post thereto, said collar forabutting the topof the outer end of said arm wherethepostisclamped tothe latter, a support for said :arm, said arm'having jmeans at its otherend for clamping it to said support, a tool spindle, a bracket havingsuperposed bearings for said spindle, a motor carrier, means'for'clamping the bracket and carrier to the upper portionof said post,and driving mechanism for said spindle arranged abovesaidbracket andcarrier. 8. Ina grinding machine, a vertically adjustable post-providedon its lower portion with a vertically adjustable'collar, ahori "40zontally disposed angularly'adjustable arm having means at its outer endfor clamping the lower end of said post thereto, said collar forabutting the top of the outer end of said arm where the post :is'clampedto the latter, a :support for said arm, said arm having means .at'its.vother end for clamping it to said support, a tool spindle, a brackethaving superposed bearings for said spindle, a motor carrier, means forclamping the bracket and carrier to the upper portion of said post,driving mechanism for said spindle arranged above said bracket andcarrier,'sai'd spindle beingvertically adjustable, and means pivotallyconnected with said bracket and with said spindle for verticallyadjusting the latter. I r s Intestimony whereof,-I afiix my signaturehereto; w V r a GUY ENOCHSON.

